This game is not steamworks, but still keys should activate on steam.
See http://forum.maniaplanet.com/viewtopic.php?f=264&t=18767

TrackMania 2: Canyon
Store Page: GamersGate[www.gamersgate.com]
Steam Page: Steam page TrackMania 2: Canyon
Price: 8.41€ per copy or 11 000BLC
Payment Method:
Paypal (You pay fees)
Bluecoins gift (Bluecoins[www.gamersgate.com]) (NO FEES)
(Can be bought using paypal)

Notes about paying in blue coins:
You can't give blue coins tied to your account, instead you must buy as gift from that page.
Blue coins are tied to USD, so 11k BLC costs exactly 11$. (Euro price changes many times a day.)
Sometimes buying more smaller blue coins packs is cheaper and you can save few cents.
But downside is you can't buy more than two times same product and thus it takes longer.

Currently:
11*1000BLC = 8.36€
2*5000BLC + 1000 BLC = 8.40€
10 000BLC + 1000BLC = 8.41€

Basic information:

• SteamRep Madjoki[steamrep.com]

1 (me)
2
3
4
5

If you have any questions please post here or add me, and ask them!

GamersGate let's you any buy only two times and theres no way around that in these packs. So it's possible to buy another pack should there be interest.